GM MDI2
Here is the tutorial on immo relearning for new key programming on GMC L5P Duramax using GM MDI2 clone scanner and SPS2 (Service Programming System). L5P immobilizer relearn
Tutorial: GM key programming using GM scan tool and SPS (Service Programming System) online subscription. Model example: Chevrolet Tahoe 2016 (the procedure can be applied to other GMs)